Spring seat



- June 18, 1929.' M. STUBNlTZ SPRING SEAT Filed June 14, 1927 PatentedJune 18, 1929.

UNITED STATES 1,717,949 PATENT o Fica.

MAURICE STUIBNITZ, 0F PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO FORT PITTBED- DING COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OFPENNSYL- VANIA.

SPRING- SEA T.

Application filed .Tune 14, 1927. Serial No. 198,717.

This invention relates to spring seats such, for example, as thoseemployed on motor cars, trucks and the like.

Seats of this type generally include a frame provided with a number ofhelical, conically shaped springs over which a padded cover is secured.Ordinarily, a sheet of material such, for example, as wire mesh isprovided across the top of the spring assembly to provide a support forthe covering material which is laid thereon. Where this is not done thecovering material falls into the relatively large spaces at the top ofeach spring and the seat rapidly breaks down and becomes mis-shapen andworn out. On the other hand, the wire mesh is expensive and addsmaterially to the cost of the finished sheet.

An object of this invention is to provide a seat of the type describedconstructed and arranged to eliminate the necessity of the wire meshhitherto employed, without in any way affecting the wearing qualities orruggedness of the finished seat.

A further object is to provide a spring seat of the type set forthhaving an improved cover supporting surface.

A still further object is to provide a spring seat of simplearrangement, which will be rugged and durable in construction and cheapto manufacture and assemble.

These and other objects which will be apparent to those skilled in thisparticular art are accomplished by means of the invention illustrated inthe accompanying drawings in which Figure 1 is a top plan view of aspring assembly from which the cover has been removed, constructed inaccordance with one embodiment of this invention. Fig. 2 is a sideelevation thereof, partially broken away. Fig. 3 is a top plan viewsimilar to Fig. 1 of a somewhat modified arrangement. Fig. 1 is asectional view of one end of a strap member forming a part of thepresent invention and Fig. 5 is a similar View of a different form ofstrap member.

The particular embodiments of this invention which have been chosen forthe purposes of illustration are shown in connection with a. spring seatof ordinary construction consisting of a lower frame 10 provided withtransversely extending spring supporting cross strips 11 on which thevertically extending, helical, conically shaped springs 12 are mounted.In the illustrated forms, an

system of tie wires 15 is employed for holding the various members inassembled relation.

The present invention contemplates the elimination of the wire mesh,hereinabove re ferred to as employed or covering the open ends of thespring members 12 to prevent the covering material pulling or beingforced into the openings at the tops thereof. As illustrated, thisincludes the provision of strap members 16 which are connected to theupper ends of said spring members and arranged so as to extend acrossthe tops of adjacent or intervening springs. These strap members may ormay not form a part of the tie system of wires 15. As illustrated inFig. 1 the cover supporting straps 16 are so arranged that the cornersprings are left uncovered but the principal'load supporting springs ofthe seat in the center thereof are so'covered as to prevent the coveringmaterial falling into the open ends thereof and the corners of the seatnot being subjected to much load of wear, the cover is effectivelysupported in place.

In Fig. 3 the strap members 16 are con nected at one end to the top of aspring member and are extended across the top of the adjacent members tothe edge of the seat and are then clamped about the upper frame 13. Inthis manner the corner springs as well as the center springs of the seatare covered and a particularly strong construction is thus provided.

The ends of the strap members 16 are so formed as to lock the spring orframe wire therein when clipped over such members. In thearrangementillustrated in Fig. 4, the end of the strap member 16 is bentdownwardly so as to form a wire engaging hook 17 A looking or retaininglug 18 is formed by curv ing the bent end of the hook member 17 upwardlyas illustrated. The resiliency of the metal is such that a spring orframe wire can be inserted in the hook 17 by forcing it through thenarrow opening formed between the main body portion of the strap member7 and the curved lug 18. It is then held against unintentional removalfrom the strap memher when once in place by the locking lug orprojection 18. In the arrangement shown in Fig. 5 the strap member 16 isprovided with a lug or ear 19 projecting downwardly toward the hook 17so as to form a wire engaging surface or shoulder for preventingaccidental removal of the strap therefrom. It can be formed by beingstruck from the metal of the strap body, as shown.

It will be apparent that the present invention provides a seat in whichthe cover supporting wire mesh or its equivalent is entirely eliminated,and the tie system of Wires 15 is employed in forming a part ofthe coversupporting surface. The strap members 16 cooperate with the tie wires insupporting the cover at all points so that the seat cannot break downunder the most severe use.

What I claim as new and desire to secure by Letters Patent is:

A spring seat embodying a plurality of vertically-arranged coiledsprings spaced apart and having a surrounding marginal frame connectedto the outside springs of the group and tie-wires connecting the topcoils of the springs together and lying in a substantially horizontalplane in alinement With said top coils and extending over the openingsbetween the springs, and a plurality of straps independent of each otherand said tie-wires and each having means for securing it in continuousalinement with a row of springs and centrally across the upper open endsof some of said springs in the row and free from attachment thereto andin horizontal alinement with the tie-wires, whereby the straps combinewith the tie-wires to form a flat sup port for a seat cover and preventthe same from sagging into the wide open spaces of the top coils andbetween the separate springs.

In testimony whereof, I have hereunto subscribed my name this 4th day ofJune, 1927.

MAURICE STUBNITZ.

